EZ programmable power supplies include both a three- and two-digit LED display for voltage and current readouts and feature a maintenance timer to alert users to a unit’s expected lifetime. They are available in 30-, 60-, 90-, 120- and 240-W models. Each unit keeps track of total number of hours it has been on and provides an alarm for preventive maintenance and replacement before an unanticipated outage. It includes a built-in display that provides, at a glance, additional information without having to connect a meter. Through the built-in displays, the NEC Class 2 models add flexibility through field-programmable current-limit using the LED displays and two buttons.
